PDF images?

[Ashley Aitken]

On 03/10/2007, at 12:10 PM, LuKreme wrote:

> On 2-Oct-2007, at 20:40, Ashley Aitken wrote:
>> I'm interested in what form the images are stored inside the  
>> PDFs?  I would have preferred them to supply JPEGs (or similar)  
>> but I guess they couldn't or it was too much work.
>
> Probably the images embedded in the PDF are TIFFs.  Maybe  
> compressed TIFFs.
>
>> I can save the PDFs to JPEG from Preview but is this just  
>> "sampling" the image from the PDF in some way?
>
> ?? any conversion to jpeg is 'sampling' in some sense of the word.

Yes, sure, I guess I was asking how to get the embedded image (if  
possible) out of the PDF rather than "resampling"  (is that better?)  
into another image format (considering PDF is vector mostly - not  
that there is anything else in the PDF besides the image and blank  
space).

>> I'd like to get as much resolution as possible (given I can't  
>> rescan).
>
> Most thing that will convert to jpg will let you set the quality.

Yes, preview does.

Cheers,
Ashley.